You created a bunch of 'x' items but call for "X" in your formula. That's part of it. Next, you don't provide a "data=x" argument in your lm() call, so it goes off and looks for various capital-X items (I suspect).
Hint: start with a small, simple dataset and work with it until you know how to use lm() and R's formula syntax. Only then go on to your full-on model. -- View this message in context: http://r.789695.n4.nabble.com/Combining-two-models-into-one-tp4678635p4678648.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
